The Greddy Racing Titanium exhaust for the 09-13 Nissan GT-R is a true performance exhaust. The Racing Titanium is very free flowing due to the 80mm diameter piping and minimal bends. This exhaust is FULL Titanium, from the flanges to the mandrel-bent piping, to the muffler canister and flamed outer-curled quad tips. Tremendous weight savings can be found with the Greddy Titanium exhaust as well as large horsepower gains. This is a premium exhaust made for a premium car.